Real-time Systems Concepts

Real-time Systems Concepts Real-time systems are characterized by the severe consequences that result if logical as well as timing correctness properties of the system are not met. Two types of real-time systems exist: soft and hard. In a soft real-time system, tasks are performed by the system as fast as possible, but the tasks don’t have to finish by specific times. In hard real-time systems, tasks have to be performed not only correctly but on time. Most real-time systems have a combination of soft and hard requirements. Real-time applications cover a wide range, but most real-time systems are embedded. An embedded system is a computer built into a system and not seen by the user as being a computer. The following list shows a few examples of embedded systems.